Sparking device.



SPARKING DEVICE.

APPLIOATION FILED APR. 24, 1911.

Patented Apr. 8, 1913.

Witmcoaeo 5144mm row c amae/fif I GHOMWAJ "UNITED STATES PATENT OFFICE.

SAMUEL HAMILTON Munrnr, Jn,

Specification 01' Letters Patent.

Application filed April 24, 1911. Serial No. 623,109.

AND JAMES WATSON MCCUEN, OF BALTIMORE, MARYLAND.

SPARKING DEVICE.

Patented Aprp 8, 191.3.

To all whom it may concern:

Be it known that we, SAMUEL H. MUnrHr,

Jr., and JAMES W. MoCunN, citizens of the United States, residing in the city oi Baltimore, State of Maryland, have invented certain new and useful Improvements in.

' Sparking Devices, of which the following is vices now in' general use, said result but few parts, arran d in a unique and compact manner, an so constructed that I they, will require no adjustment whatever.

use, an

A further object of our invention isjto provide a sparking device! of the character.

above descriloed, whic'h can-be easily and quickly applied to any style of engine now to construct thesame ln-ja-fsim ple, compact a'nd'durable manner, one which 7 will elficiently perform" all t its intended functions.

. With these objects view,- such others as mayhereinafterap ar, our invention'consistsihthe partic' ar construction of the various arts, and in the novel man ner of combinat on and arrangement of said parts, 'all of which will mo ignifi r cri a specifically pointed ont mthe ap ended cla'lm.

tional view.

n the drawings forming a part of specification :'Figure is a top plan View, Fig12is a side elevation, Fig. 3 1s a sec-j Referring t y-numerals to the drawings, 1

i represents the end of, a cam shaft upon which is mounted our improved sparking device, by means of a sleeve 2, which fits snugly over the end of the shaft andis secured thereto by a set screw 3, which passes through a collar 4, having a ball race 5, in one face thereof as clearly shown in Fig. 3.

Mounted upon the sleeve 2, is an' outer sleeve 6, having a .ball race 7, in'one face ject being tocause the current to'jun p and "poiht 18 is'conn'ected' to t readily understood byallc onversantin such having an arm 9, formed integral therewith, and supporting'a cylindrical rim portion 10 of a casing.

l The sleeve 2 projects through the sleeve 6, into the rim 10 of the casing, and terminates in a shaft 11, said shaft. having mounted thereupon a fiber hand 12, in which is set a series of contact points 13. The free end of the shaft supports a disk 14 of fiber or thelike, surrounded by a band 15, which carries a contact blade 16. The contacts 13 are adapted to engage a roller contactv 17,

mounted in the wall of the casing, the contact 17 being pressed inwardly by a spring 17 and being adapted forconnection to a vibrator coil not shown. The band '15, 'isso arranged that it is constantly in close posi tion to a contact 18, which, is connected to 1 the feed wire of a coilnot shown, ,and'jthe contact blade 16 carried by the band is brought as'the band revolves'in close osi-' 't on tothe contacts 19, 2 0, 21and22, w i'ch 751 are adapted for connection to sparking coil not shown.-;. is to be notedthatthe con- ,taetpointsltl,20,21'and-22dondtjtouch the v centactlblade 16 carried the band,'hut ardbrought 'in close proximity thereto as' the band revolves,suflic1ently close for the curi-re ntto and thereby exh ila-rate the sparkii It'wf lbe seen that the contact point 18,'is1also "in close proximity tothe'band,

but notin direct contact therewith, the obthereby exhilarate the'sgarltf The contact e secondary circuit c'oilas is manifest. g 1 4 In El ewe have sho wn afthlin disk-of non-con ucting matenalinterppsedbetween the contact pomts13, and the bane 15, which carries the contact blade 16, With this disk,

we have found it possible" to construct the device in a morecomp'act manner, without any danger of the current jumpingfromthm contacts; 13, to the :contact-hla sup orting the same. Y

cover 23 the device atany and all-times. p

We deem thejoregoing explanation sufficiently plain that the-invention will be de 16 or band he casing 10, isrdprovided witha glass which afio smeans'for inspecting thereof whichfcorresponds to the ball race matters.

,, R 5, This sleerefi, supports a'circuIarhead S, Having various iea- 2' obskafi 5 a hea-dcecurd'therem and formed with a' central sleve, a sleeve'mounted in the firstnamed sleeve arid extended into the, casing to form a shaft, a. disk of insulating sub;- stancesec'ured tosaid' shaft, :2 band secured 10 to the rim of said diskand provided with an outwardly projecting contact blade, contact secured to the path-of movement of said blade, an

. inwardly spriu to ,the rim of the casing close ,-presscd' contact carried by the casing, 8.11% contacts carried by said 15 shaft, and-engaging said spring contact, and a diskoiinsulatin'g substance mounted in the cusingand separating said last-named shaft contacts and spring contact from other contacts;

SAMUEL HAMILTON MURPHY, JR. "JAMES WATSON MOCUEN Witnesses: v

" AUGUSTUS W. BRADFORD,

R. H, JOHNS.

0039155101! this z uteut may 1: obtained tar five centscach, by afich'essing :11: f Commissioner 0! Patents, Washiugtcu, D. G. 

